Comparison

Arm Speed Motion Analyzer vs Disc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Arm Speed Motion Analyzer

Measure throw and swing speeds without specialized equipment. This app uses your iPhone or Apple Watch motion sensors to provide real-time feedback for various sports. Track progress, set personal records, and analyze trends to train smarter.

Highlights
  • Real-time speed detection
  • iPhone and Apple Watch compatibility
  • Supports multiple sports
  • Personal records and achievements
  • Weekly trends and analytics
  • Health app integration
Features
Read full description

Track your arm speed, no radar gun needed. Arm Speed uses motion sensors on your iPhone or Apple Watch to measure throw and swing speed in real time. Built for athletes who want to train smarter and track progress across every session. WORKS WITH iPHONE AND APPLE WATCH Version 3.0 introduces iPhone motion tracking: just hold your phone and throw or swing. Apple Watch support is still here and better than ever. Train with whichever device you have on hand. REAL-TIME SPEED TRACKING See your speed instantly after every throw or swing. Arm Speed detects each motion automatically, no buttons to press, just start a session, do your thing, and watch the numbers appear. See device acceleration change in realtime: even the slightest device jiggle will impact real time acceleration. SEE YOUR MOTION PATH Go beyond the number. Every throw and swing is captured as a 3D motion path, a ribbon that traces your arm through the air. Thicker means faster, and color grades your smoothness from fluid green to jagged red. Spin the path around, compare reps, and spot hitches in your mechanics that a speed reading alone can't show. PERSONAL RECORDS AND ACHIEVEMENTS Track your all-time top speed, best session, longest streak, and more. Unlock achievements as you hit milestones., from your first 30 MPH throw to logging your 1,000th rep. Celebration animations fire off when you break a record or unlock something new. WEEKLY TRENDS AND ANALYTICS See how your speed and volume change week over week. A ghost line overlays your previous week so you can visualize improvement at a glance. Speed band breakdowns show where your throws are clustering, and daily activity heatmaps keep you accountable. HEALTH APP INTEGRATION Every session can log as a workout in Apple Health with heart rate tracking. Your training data lives alongside the rest of your fitness profile. FREE TO USE Arm Speed is free to download and start tracking. Upgrade to Arm Speed Pro to unlock interactive 3D motion paths, unlimited session history, search and filters across your sessions, advanced speed and acceleration charts, custom chart date ranges, bulk session management, personal records, achievements, and weekly trends. BUILT FOR YOUR SPORT Baseball throwing and batting Disc golf and frisbee throws Softball pitching and hitting Pickleball serves and volleys Tennis serves and groundstrokes Golf swing speed Football throws Cricket bowling and batting Hockey and lacrosse stick speed Badminton, racquetball, and more Website: https://armspeed.app Follow @arm_speed_app on Instagram for news and updates. Questions or feedback? Email: feedback@fre-studios.com Terms of Service: https://armspeed.app/legal/terms Privacy Policy: https://armspeed.app/legal/privacy

About

Disc

This app uses AI to analyze and improve your disc golf and ultimate frisbee throws. Record your form, get detailed breakdowns, and compare it to professional athletes. Perfect for players of all levels seeking to elevate their game.

Highlights
  • AI throw analysis
  • Slow-motion recording
  • Form breakdown
  • Comparison to pro athletes
  • Automated scoring
  • Backhand, Forehand, and Putting support
Features
Read full description

Looking to improve your Disc Golf or Ultimate Frisbee throws? Look no further than Disc-i, the ultimate coaching app for Disc Golf and Ultimate enthusiasts! With Disc-i, you'll have access to state-of-the-art coaching tools that will help you perfect your throws. Our app features a first in its class automated analysis capability that allows you to improve your throwing form like never before. Record your form in slow motion from the side or from behind. Both Backhand, Forehand, and Putting now supported! Have the application breakdown your form into key moments of the throw. The app then compares where your body is compared to the best throwers in the sport. Get your throw scored by our automated scoring program and see what your quick fix to your form might be. For extra visualization, buy a pro's form to be able to compare your side by side with theirs. Proceeds from your purchase go back to helping the pros on tour. Whether you're a seasoned pro or just starting out, Disc-i is the perfect companion for anyone looking to take their game to the next level. Download Disc-i today and discover the power of the best disc golf and ultimate frisbee throw coaching app! Lock into a subscription now! As more features are added, the price will rise. Privacy Policy: https://www.disciapp.com/privacy-policy/ Terms of Use: https://www.disciapp.com/terms-of-use/

Screenshots

Arm Speed Motion Analyzer4 screens
Disc4 screens

Verdict

The call

The clearest difference is monetization model: Arm Speed Motion Analyzer at freemium against Disc's subscription. Disc's advantage is rating (4.4 vs 4.2) and review sentiment (43% vs 31%). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Arm Speed Motion Analyzer sells 3 in-app purchases, starting at $0.99 per month and Disc sells 8 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Disc holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: Disc has 61 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 31% of Arm Speed Motion Analyzer's written reviews are positive against 43% of Disc's.

UpkeepUpdate frequency

Arm Speed Motion Analyzer ships an update fortnightly, Disc every 3 weeks. The most recent releases landed on October 22, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
Arm Speed Motion Analyzer versus Disc: the parameters behind the verdict, then further details
ParameterArm Speed Motion AnalyzerDisc
PriceFreeFree
Rating4.2 (11 ratings)4.4 (61 ratings) — better
Positive reviews30.8% of reviews42.9% of reviews — better
Number of ratings1161 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterSubscription
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.118.0 — better
Further details — not scored
Size11 MB42 MB
Age rating4+4+
DeveloperFRE STUDIOS LLCDisc.ai LLC

Customer experience

Arm Speed Motion Analyzer

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews26 reviews
Positive30.8%
Neutral11.5%
Negative57.7%

Disc

All ratings61 ratings
Positive86.9%
Neutral0.0%
Negative13.1%
Written reviews7 reviews
Positive42.9%
Neutral0.0%
Negative57.1%

In-app purchases

3 purchases

Arm Speed Motion Analyzer

Subscriptions2
  • Arm Speed Pro Monthly7 Days trial$0.991 Month
  • Arm Speed Pro7 Days trial$9.991 Year
One-time1
  • Arm Speed Analyzer Pro$2.99
8 purchases

Disc

Subscriptions6
  • Monthly Subscription7 Days trial$4.991 Month
  • Amateur Tier$4.991 Month
  • Pro Monthly$19.991 Month
Show 3 more
  • Yearly Subscription1 Month trial$49.991 Year
  • Amateur Yearly$49.991 Year
  • Pro Yearly$199.991 Year
One-time2
  • Form Analysis$2.99
  • Robert Burridge's Form$19.99

Questions

Is Arm Speed Motion Analyzer free?
Arm Speed Motion Analyzer is free to download, with in-app purchases available.
Is Disc free?
Disc is free to download, with in-app purchases available.
Which has better reviews, Arm Speed Motion Analyzer or Disc?
Disc is rated higher. Arm Speed Motion Analyzer averages 4.2 out of 5 from 11 ratings, while Disc averages 4.4 from 61 ratings.
Do Arm Speed Motion Analyzer or Disc have ads?
Neither Arm Speed Motion Analyzer nor Disc shows ads.
Which is updated more often, Arm Speed Motion Analyzer or Disc?
Arm Speed Motion Analyzer ships an update fortnightly, and Disc every 3 weeks. Most recently, Arm Speed Motion Analyzer was updated on October 22, 2026 and Disc on October 2, 2026.

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